FR2584193A1 - INDUCTIVE SENSOR FOR CURRENT MEASUREMENT - Google Patents

INDUCTIVE SENSOR FOR CURRENT MEASUREMENT Download PDF

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Publication number
FR2584193A1
FR2584193A1 FR8509864A FR8509864A FR2584193A1 FR 2584193 A1 FR2584193 A1 FR 2584193A1 FR 8509864 A FR8509864 A FR 8509864A FR 8509864 A FR8509864 A FR 8509864A FR 2584193 A1 FR2584193 A1 FR 2584193A1
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FR
France
Prior art keywords
printed circuit
coils
sensor according
coil
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR8509864A
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French (fr)
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FR2584193B1 (en
Inventor
Gilles Baurand
Rene Fouret
Marek Rundsztuk
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Telemecanique SA
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Telemecanique Electrique SA
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9320756&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FR2584193(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Telemecanique Electrique SA filed Critical Telemecanique Electrique SA
Priority to FR8509864A priority Critical patent/FR2584193B1/en
Priority to AT86401247T priority patent/ATE47768T1/en
Priority to DE8686401247T priority patent/DE3666745D1/en
Priority to EP86401247A priority patent/EP0209415B1/en
Priority to US06/877,949 priority patent/US4709205A/en
Publication of FR2584193A1 publication Critical patent/FR2584193A1/en
Application granted granted Critical
Publication of FR2584193B1 publication Critical patent/FR2584193B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • G01R15/181—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using coils without a magnetic core, e.g. Rogowski coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers
    • H01F38/30—Constructions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • H01F2005/046—Details of formers and pin terminals related to mounting on printed circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • H01F2027/065—Mounting on printed circuit boards

Abstract

An inductive current measuring sensor is provided comprising several coils connected electrically in series and disposed in a polygonal contour, so as to surround the conductor on which it is desired to measure the current. Each coil comprises windings disposed on an insulating bobbin and connection elements. The bobbins are disposed on the face of a printed circuit having a central recess through which the conductor may pass. The printed circuit carries conducting tracks interconnecting the fixing points of the connection elements together and to external connection members.

Description

-- i --- i -

CAPTEUR INDUCTIF POUR MESURE DE COURANT.  INDUCTIVE SENSOR FOR CURRENT MEASUREMENT.

La présente invention concerne un capteur inductif pour mesure de courant, notamment du type à ceinture de Rogowski, comportant plusieurs bobines reliées électriquement en série et disposées selon un contour polygonal de manière à entourer le conducteur sur lequel on souhaite effectuer la  The present invention relates to an inductive sensor for current measurement, in particular of the Rogowski belt type, comprising a plurality of coils connected electrically in series and arranged in a polygonal contour so as to surround the conductor on which it is desired to carry out the

lecture de courant.current reading.

Le brevet FR No 2 507 811 décrit un tel capteur inductif de courant à plusieurs bobinages disposés selon un carré ou un rectangle dans un boîtier, les carcasses des bobinages étant soit indépendantes, soit solidarisées par pliage d'une seule pièce moulée en matière plastique, et pouvant être entourées par un blindage de protection non fermé sur luimême. Le capteur permet de recueillir une tension induite dans les bobinages, cette tension étant une fonction linéairement  FR No. 2,507,811 discloses such a multi-winding current inductive sensor arranged in a square or a rectangle in a housing, the carcasses of the windings being either independent or secured by folding of a single molded piece of plastics material, and may be surrounded by a protective shield not closed on itself. The sensor makes it possible to collect a voltage induced in the windings, this voltage being a function linearly

proportionnelle à la dérivée du courant qui le traverse.  proportional to the derivative of the current flowing through it.

L'invention part de la constatation qu'un tel capteur induc-  The invention starts from the observation that such an inductive sensor

tif de courant peut être perfectionné en ce qui concerne son  tif of current can be perfected with regard to its

industrialisation, notamment son montage et sa connectique.  industrialization, including its assembly and connections.

Elle a notamment pour but de simplifier la réalisation d'un  In particular, it aims to simplify the realization of a

capteur inductif de courant, plus particulièrement en faci-  inductive current sensor, more particularly in

litant la connexion des bobines entre elles et avec un  reading the connection of the coils together and with a

circuit électronique de traitement.  electronic processing circuit.

- 2- Elle a également pour but de faciliter l'assemblage du capteur inductif par la réalisation d'un sous-ensemble capteur comprenant les bobines et leurs moyens de support et  It is also intended to facilitate the assembly of the inductive sensor by the production of a sensor subassembly comprising the coils and their support means and

de connexion.connection.

L'invention concerne un capteur de mesure inductif de cou-  The invention relates to an inductive measurement sensor for

rant, notamment à ceinture de Rogowski, comportant plusieurs bobines reliées électriquement en série et disposées selon un contour polygonal de manière à entourer le conducteur de puissance -câble ou barre- sur lequel on souhaite effectuer la lecture de courant, chaque bobine comprenant des nappes d'enroulements disposés sur une carcasse isolante et des éléments de connexion à une bobine voisine ou à un organe de  rant, in particular Rogowski belt, comprising several coils connected electrically in series and arranged in a polygonal contour so as to surround the power conductor -cable or bar- on which it is desired to perform the current reading, each coil comprising layers of windings arranged on an insulating carcass and connecting elements to a neighboring coil or to a body of

connexion externe.external connection.

Selon l'invention, les carcasses isolantes des bobines sont montées sur une première face d'un circuit imprimé muni d'un évidement sensiblement central de dimensions prédéterminées en fonction du calibre du conducteur de puissance; les éléments de connexion associés à chaque bobine sont fixés au circuit imprimé, celui-ci portant des pistes conductrices interconnectant les points de fixation des éléments de  According to the invention, the insulating carcasses of the coils are mounted on a first face of a printed circuit provided with a substantially central recess of predetermined dimensions according to the size of the power conductor; the connection elements associated with each coil are fixed to the printed circuit, the latter bearing conductive tracks interconnecting the fixing points of the elements of

connexion entre eux ou aux organes de connexion externe.  connection between them or to the external connection devices.

Le capteur inductif réalisé de la sorte est particulièrement simple puisque le circuit imprimé assure à la fois une  The inductive sensor made in this way is particularly simple since the printed circuit ensures both a

fixation mécanique des carcasses de bobines et une intercon-  mechanical fixing of the coil carcasses and an intercon-

nexion électrique des bobines. Les connexions externes peuvent s'effectuer avantageusement en bénéficiant du circuit imprimé grâce à la présence sur celui-ci de pistes conductrices appropriées et de pattes de connexions externes  electrical connection of the coils. External connections can be made advantageously by benefiting from the printed circuit by virtue of the presence on the latter of appropriate conductive tracks and external connection tabs.

soudées au circuit.soldered to the circuit.

Chaque bobine porte, soit un bobinage à nombre pair de nappes d'enroulements, auquel cas les éléments de connexion sont situés d'un même côté de la carcasse, soit un bobinage à nombre impair de nappes d'enroulements, auquel cas les éléments de connexion sont situés de part et d'autre de la - 3 - carcasse. Dans le premier cas, les pistes conductrices  Each coil carries either an even number winding of windings, in which case the connection elements are located on the same side of the carcass, or an odd number winding of windings, in which case the elements of connection are located on both sides of the carcass. In the first case, the conductive tracks

d'interconnexion d'éléments de connexion de bobines voisi-  interconnection of neighboring coil connection elements.

nes ont une longueur sensiblement équivalente à celle de la carcasse. Dans le second cas, le circuit imprimé porte_ avantageusement une piste conductrice de neutralisation entourant sensiblement son évidement central et disposée électriquement en série et magnétiquement en opposition avec  They have a length substantially equivalent to that of the carcass. In the second case, the printed circuit advantageously carries a conductive neutralization track substantially surrounding its central recess and disposed electrically in series and magnetically in opposition with

les enroulements de manière à neutraliser les effets pertur-  windings so as to neutralize the disturbing effects

bateurs des champs magnétiques extérieurs.  external magnetic fields.

Une résistance d'ajustement peut de plus être rapportée sur le circuit imprimé afin de permettre l'étalonnage du capteur  An adjustment resistor may additionally be reported on the printed circuit board to allow calibration of the sensor

pour s'affranchir des dispersions de fabrication.  to overcome manufacturing dispersions.

D'autres particularités et avantages de l'invention résul-  Other features and advantages of the invention result from

teront de la description faite ci-après d'un mode de réali-  the following description of a method of reali-

sation non limitatif en regard des dessins annexes.  non-limiting statement with reference to the accompanying drawings.

La figure 1 représente en élévation un capteur induc-  FIG. 1 represents in elevation an inductive sensor

tif de courant à ceinture de Rogowski conforme à l'invention; La figure 2 montre une vue de dessous en perspective éclatée du capteur; La figure 3 est une vue en coupe selon III-III du capteur de la figure 1; La figure 4 représente en vue de côté le circuit imprimé porteur des corps de bobine; La figure 5 est une coupe partielle agrandie selon la ligne IV-IV de la figure 3 montrant l'assise d'une carcasse de bobine sur le circuit imprimé; La figure 6 est une vue du circuit imprimé selon la flèche F de la figure 4; - 4 -  Rogowski belt current circuit according to the invention; Figure 2 shows an exploded perspective bottom view of the sensor; Figure 3 is a sectional view along III-III of the sensor of Figure 1; Figure 4 shows a side view of the printed circuit carrier of the coil bodies; Figure 5 is an enlarged partial section along the line IV-IV of Figure 3 showing the seat of a coil casing on the circuit board; Figure 6 is a view of the printed circuit according to the arrow F of Figure 4; - 4 -

La figure 7 montre le schéma électrique correspondant.  Figure 7 shows the corresponding wiring diagram.

Le capteur inductif d'intensité 10 représenté sur la figure 1 présente un boîtier 11 qui se compose d'une enveloppe supérieure 12 et d'une enveloppe inférieure 13; les deux enveloppes 12, 13 sont mutuellement emboîtables et fixées par exemple par rivetage. Le boîtier comporte une face arrière 14 munie d'éléments de fixation à un support tel qu'un rail 15 ou une platine; il comporte de plus un puits traversant 16 d'axe vertical X-X parallèle au plan de la face 14 de forme polygonale, présentement rectangulaire ou carré, de dimensions prédéterminées pour le passage du conducteur de puissance en forme de câble ou de barre dont on désire effectuer la lecture de courant. Le boîtier est, par ailleurs, équipé d'un porte-repère frontal 17 et d'une  The inductive intensity sensor 10 shown in FIG. 1 has a housing 11 which consists of an upper envelope 12 and a lower envelope 13; the two envelopes 12, 13 are mutually nestable and fixed for example by riveting. The housing comprises a rear face 14 provided with fastening elements to a support such as a rail 15 or a plate; it further comprises a through shaft 16 of vertical axis XX parallel to the plane of the face 14 of polygonal shape, presently rectangular or square, of predetermined dimensions for the passage of the power conductor in the form of cable or bar which one wishes to perform current reading. The housing is furthermore equipped with a front marker holder 17 and a

ouverture 18 dirigée parallèlement à l'axe X-X pour permet-  opening 18 directed parallel to the axis X-X to allow

tre le raccordement de conducteurs externes assurant la connexion du capteur avec un circuit électronique associé de traitement.  be the connection of external conductors providing the connection of the sensor with an associated electronic processing circuit.

Comme on le voit sur la figure 2, le boîtier 11 loge un sous-  As can be seen in FIG. 2, the housing 11 houses a subset

ensemble de détection A constitué par quatre bobines identi-  sensing assembly A consisting of four identical coils

ques deux à deux B1-B4 disposées en rectangle ou en carré  two to two B1-B4 arranged in rectangle or square

pour former une ceinture de Rogowski; les bobines compren-  to form a Rogowski belt; the reels include

nent des nappes d'enroulements respectifs W1-W4 bobinées en nombre impair sur des carcasses isolantes C1-C4. Chaque carcasse isolante se présente (figures 3 et 4) sous la forme d'un noyau creux 20 se rattachant à des parois d'arrêt  W1-W4 wound windings of odd-numbered windings on insulating C1-C4 carcasses are generated. Each insulating carcass is presented (FIGS. 3 and 4) in the form of a hollow core 20 attached to stop walls.

latérales 21, 22; chaque paroi 21, 22 est dotée d'un piète-  laterals 21, 22; each wall 21, 22 is provided with a

ment 23 dans lequel est ménagé un orifice traversant 24  23 in which is formed a through hole 24

logeant un picot de connexion 25, 26. Le nombre d'enroule-  housing a connection pin 25, 26. The number of rolls

ments de chaque bobine est impair de façon que l'entrée et la sortie de courant de la bobine s'effectuent près des deux parois opposées 21, 22. Les piètements 23 sont biseautés à  Each coil is odd so that the current input and output of the coil are made close to the two opposite walls 21, 22. The legs 23 are bevelled at

45 pour diminuer au maximum l'écartement des bobines adja-  45 to reduce to a maximum the spacing of the coils adja-

centes (voir figures 2 et 3).centes (see Figures 2 and 3).

-- 5 --- 5 -

Selon l'invention, les bobines B1-B4 sont montées sur un circuit imprimé 30 de forme générale rectangulaire ou carrée et muni d'un évidement central 31 de section rectangulaire ou carrée légèrement supérieure à celle du puits 16 de passage du conducteur de puissance. Les carcasses C1C4 sont disposées sur une première face 32 du circuit imprimé 30 de manière que les picots de connexion , 26 puissent être fixés à la deuxième face 33 du circuit imprimé 30. Celui-ci porte d'autre part, du même côté que les carcasses de bobines, deux pattes de connexion externe 34, 35 destinées à se loger dans l'ouverture 18 et une résistance d'étalonnage R. La fixation des picots 25, 26 et  According to the invention, the coils B1-B4 are mounted on a printed circuit 30 of generally rectangular or square shape and provided with a central recess 31 of rectangular or square cross section slightly greater than that of the well 16 for the passage of the power conductor. The carcasses C1C4 are disposed on a first face 32 of the printed circuit 30 so that the connection pins 26 can be fixed to the second face 33 of the printed circuit 30. The latter also bears, on the same side as the coil carcasses, two external connection tabs 34, 35 for housing in the opening 18 and a calibration resistor R. The fixing of the pins 25, 26 and

des pattes 34, 35 peut s'effectuer par passage à la vague.  legs 34, 35 can be made by passage to the wave.

L'agencement du circuit imprimé sera explicité plus loin en  The layout of the printed circuit will be explained later in

regard des figures 6 et 7.look at Figures 6 and 7.

Les enveloppes supérieure 12 et inférieure 13 du boîtier présentent respectivement des manchons 12a et 13a à contour  The upper envelope 12 and lower 13 of the housing respectively have sleeves 12a and 13a with contour

sensiblement rectangulaire ou carré, mutuellement emboîta-  substantially rectangular or square, mutually interlocking

bles pour déterminer intérieurement le puits 16 de passage du conducteur de puissance et extérieurement le logement du sous-ensemble capteur A à bobines B1-B4 et circuit imprimé 30. Le sous-ensemble A est ainsi centré sur l'axe X-X par l'emboîtement de l'évidement central 31 du circuit 30 sur  In order to internally determine the well 16 for passing the power conductor and externally for the housing of the B1-B4 coil sensor subsystem A and printed circuit 30. The subassembly A is thus centered on the axis XX by the interlocking. of the central recess 31 of the circuit 30 on

l'un des manchons, tandis que d'autres conformations inté-  one of the sleeves, while other

rieures aux enveloppes 12, 13 peuvent également contribuer  envelopes 12, 13 may also contribute

au centrage et au maintien du sous-ensemble.  centering and maintaining the subset.

Un blindage 40 est disposé dans le boîtier 11 du capteur ; la paroi extérieure du blindage 40 est au contact de la cloison lla du boîtier. Ce blindage est ouvert en 41 du côté de la face arrière 14 du boîtier, tandis qu'un élément de  A shield 40 is disposed in the housing 11 of the sensor; the outer wall of the shield 40 is in contact with the partition 11a of the housing. This shield is open at 41 on the side of the rear face 14 of the housing, while an element of

blindage complémentaire 42 est inséré en regard de l'ouver-  complementary shielding 42 is inserted opposite the opening

ture 41 du blindage 40 dans des rainures de maintien 43  41 of the shield 40 in the holding grooves 43

venues de moulage avec l'enveloppe 13.  molded with the envelope 13.

- 6 - La face de soudage 33 du circuit imprimé 30 présente des pistes telles qu'indiquées figure 6. La patte 34 de connexion externe est reliée par une piste 50 ménagée sur la face 33 au picot 25 de la bobine B1; l'autre picot 26 de la bobine B1 est relié par un point de soudure au picot 25 de la bobine B2 et ainsi de suite jusqu'au picot 26 de la bobine B4 qui est brasé sur une piste 51 ménagée sur la face 33 et contournant la quasi-totalité de l'évidement central 31 du circuit imprimé 30, de manière à être parcourue par le courant en sens opposé à la circulation du courant dans les  The welding face 33 of the printed circuit 30 has tracks as indicated in FIG. 6. The external connection tab 34 is connected by a track 50 formed on the face 33 to the pin 25 of the coil B1; the other pin 26 of the coil B1 is connected by a welding point to the pin 25 of the coil B2 and so on until the pin 26 of the coil B4 which is brazed on a track 51 formed on the face 33 and bypassing substantially all of the central recess 31 of the printed circuit 30, so as to be traversed by the current in the opposite direction to the flow of current in the

bobines (cf. flèches fl et f2 sur la figure 7).  coils (see arrows f1 and f2 in FIG. 7).

Une résistance R d'étalonnage ou d'ajustement est reliée, d'une part, à la piste 51, d'autre part, à une piste 52  A calibration or adjustment resistor R is connected, on the one hand, to the track 51, on the other hand, to a track 52

reliée à la deuxième patte de connexion externe 35.  connected to the second external connection tab 35.

On constate que l'assemblage du capteur selon l'invention consiste simplement à loger le blindage dans l'une des enveloppes, à mettre en place le sous-ensemble, à couler éventuellement une résine pour assurer une meilleure tenue  It can be seen that the assembly of the sensor according to the invention consists simply of housing the shielding in one of the envelopes, to put in place the subassembly, to possibly cast a resin to ensure better hold

aux chocs et vibrations du capteur et à riveter les envelop-  shock and vibration of the sensor and to rivet the envelopes

pes. Il va de soi que l'on peut apporter des modifications  pes. It goes without saying that we can make modifications

au mode de réalisation décrit sans sortir du cadre de l'in-  described in the embodiment without departing from the scope of the

vention. Le capteur inductif illustré est à ceinture de Rogowski, mais peut être constitué par tout autre capteur inductif de mesure de courant à bobines interconnectables  vention. The inductive sensor illustrated is a Rogowski belt, but may be any other inductive sensor for measuring currents with interconnectable coils.

disposées en polygone à nombre de côtés quelconque.  arranged in a polygon with any number of sides.

-7--7-

Claims (8)

Revendications de brevetPatent claims 1. Capteur inductif de mesure de courant, notamment à ceinture de Rogowski, comportant: - plusieurs bobines (B1-B4) reliées électriquement en série et disposées selon un contour polygonal de manière à entourer le conducteur de puissance sur lequel on souhaite effectuer la lecture de courant,  1. Inductive current measuring sensor, in particular with a Rogowski belt, comprising: a plurality of coils (B1-B4) connected electrically in series and arranged in a polygonal contour so as to surround the power conductor on which it is desired to carry out the reading current, - chaque bobine comprenant des nappes d'enroulements (Wl-  each coil comprising layers of windings (W1) W4) disposées sur une carcasse isolante (Cl-C4) et des éléments de connexion à une bobine voisine ou à un organe de connexion externe, caractérisé par le fait que: - les carcasses isolantes (Ci-C4) des bobines sont disposées sur une première face (32) d'un circuit imprimé (30) muni d'un évidement central (31) de dimensions prédéterminées en fonction du calibre du conducteur de puissance, - les éléments de connexion (25) associés à au moins deux bobines sont fixés au circuit imprimé, - le circuit imprimé (30) porte des pistes conductrices (50, 52) interconnectant les points de fixation des éléments de connexion (25) entre eux ou aux organes de connexion  W4) arranged on an insulating carcass (C1-C4) and connection elements to a neighboring coil or to an external connection member, characterized in that: - the insulating carcasses (Ci-C4) of the coils are arranged on a first face (32) of a printed circuit (30) provided with a central recess (31) of predetermined dimensions according to the size of the power conductor, - the connecting elements (25) associated with at least two coils are fixed to the printed circuit, - the printed circuit (30) carries conductive tracks (50, 52) interconnecting the points of attachment of the connection elements (25) to one another or to the connecting members externe (34, 35).external (34, 35). 2. Capteur selon la revendication 1,  2. Sensor according to claim 1, caractérisé par le fait que le circuit imprimé (30) consti-  characterized in that the printed circuit (30) constitutes tue simultanément une embase porteuse des carcasses isolan-  simultaneously kills a base carrying insulating carcasses tes (Cl-C4) des bobines (Bl-B4).(Cl-C4) coils (B1-B4). 3. Capteur selon la revendication 1 ou 2, dont chaque bobine porte un nombre pair de nappes d'enroulement (Wl-W4), caractérisé par le fait que les pistes conductrices du - 8 - circuit imprimé (30) interconnectant les points de fixation d'éléments de connexion (25) de bobines voisines ont une longueur sensiblement équivalente à celle de la carcasse (Cl-C4).  3. The sensor according to claim 1, wherein each coil carries an even number of winding layers (W1-W4), characterized in that the conductive tracks of the printed circuit (30) interconnecting the fixing points. connecting elements (25) of neighboring coils have a length substantially equivalent to that of the carcass (C1-C4). 4. Capteur selon la revendication 1 ou 2, dont chaque4. Sensor according to claim 1 or 2, each of which bobine porte un nombre impair de nappes d'enroulements (W1-  coil carries an odd number of layers of windings (W1- W4), caractérisé par le fait que les pistes conductrices du circuit imprimé (30) interconnectant les points de fixation d'éléments de connexion (25) de bobines voisines ont une faible longueur, tandis qu'il est prévu sur le circuit  W4), characterized in that the conductive tracks of the printed circuit (30) interconnecting the fixing points of connection elements (25) of neighboring coils have a short length, while it is provided on the circuit imprimé une piste conductrice (51) de neutralisation entou-  printed a conducting track (51) of neutralization rant sensiblement l'évidement central (31) et disposée élec-  substantially the central recess (31) and arranged electrically triquement en série et magnétiquement en opposition avec les  tricely in series and magnetically in opposition to the enroulements (W1-W4).windings (W1-W4). 5. Capteur selon l'une des revendications 1 à 4,  5. Sensor according to one of claims 1 to 4, caractérisé par le fait que le circuit imprimé (30) porte  characterized in that the printed circuit (30) carries une résistance (R) d'ajustement reliée à ses pistes conduc-  an adjustment resistor (R) connected to its conductive tracks trices (51-52) pour permettre d'étalonner ladite sonde.  (51-52) to allow calibration of the probe. 6. Capteur selon l'une des revendications 1 à 5,  6. Sensor according to one of claims 1 to 5, caractérisé par le fait que les bobines (B1-B4) et le cir-  characterized in that the coils (B1-B4) and the circuit cuit imprimé (30) constituent un sous-ensemble (A) disposé dans un boîtier isolant (11) logeant également un blindage ouvert (40) entourant les bobines et comprenant un manchon qui détermine un puits (16) pour le passage du conducteur de  printed cookware (30) is a subset (A) disposed in an insulating housing (11) also housing an open shield (40) surrounding the coils and including a sleeve which determines a well (16) for the passage of the conductor puissance et qui constitue un moyen de centrage du sous-  power and which constitutes a means of centering the sub- ensemble.together. 7. Capteur selon l'une des revendications 1 à 6,  Sensor according to one of Claims 1 to 6, caractérisé par le fait que le boîtier (11) se compose de deux enveloppes embo tables (12, 13) dont l'une présente une ouverture (18) pour le passage d'organes (34, 35) de  characterized by the fact that the housing (11) consists of two envelopes (12, 13), one of which has an opening (18) for the passage of members (34, 35) of connexion externe fixés au circuit imprimé.  external connection fixed to the printed circuit. - 9 -- 9 - 8. Capteur selon l'une des revendications 1 à 7,  8. Sensor according to one of claims 1 to 7, caractérisé par le fait que le boîtier (11) présente une face arrière (14) dotée d'éléments de fixation à un support  characterized in that the housing (11) has a rear face (14) with fasteners to a support normalisé de manière que l'axe (X-X) du puits (16) de passa-  normalized so that the axis (X-X) of the well (16) of pass- ge pour le conducteur de puissance soit contenu dans un plan  ge for the power driver is contained in a plan parallèle à celui de ladite face arrière.  parallel to that of said rear face.
FR8509864A 1985-06-28 1985-06-28 INDUCTIVE SENSOR FOR CURRENT MEASUREMENT Expired FR2584193B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR8509864A FR2584193B1 (en) 1985-06-28 1985-06-28 INDUCTIVE SENSOR FOR CURRENT MEASUREMENT
AT86401247T ATE47768T1 (en) 1985-06-28 1986-06-10 INDUCTIVE SENSOR FOR CURRENT MEASUREMENT.
DE8686401247T DE3666745D1 (en) 1985-06-28 1986-06-10 Inductive sensor for measuring a current
EP86401247A EP0209415B1 (en) 1985-06-28 1986-06-10 Inductive sensor for measuring a current
US06/877,949 US4709205A (en) 1985-06-28 1986-06-24 Inductive sensor for current measurement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8509864A FR2584193B1 (en) 1985-06-28 1985-06-28 INDUCTIVE SENSOR FOR CURRENT MEASUREMENT

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FR2584193A1 true FR2584193A1 (en) 1987-01-02
FR2584193B1 FR2584193B1 (en) 1987-08-07

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US (1) US4709205A (en)
EP (1) EP0209415B1 (en)
AT (1) ATE47768T1 (en)
DE (1) DE3666745D1 (en)
FR (1) FR2584193B1 (en)

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Also Published As

Publication number Publication date
EP0209415B1 (en) 1989-11-02
ATE47768T1 (en) 1989-11-15
EP0209415A1 (en) 1987-01-21
US4709205A (en) 1987-11-24
DE3666745D1 (en) 1989-12-07
FR2584193B1 (en) 1987-08-07

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